Recognised as Colour

#D21831

#D21831
Red
Dark
Nearest: Crimson

#D21831 is a red with RGB values 210, 24, 49 and HSL 352°, 79%, 46%. It is a dark colour, so white text on it reaches 5.4:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#D21831#D21831

HEX#D21831

RGBrgb(210, 24, 49)

RGB (0–1)0.8235, 0.0941, 0.1922

RGB percentages82.4%, 9.4%, 19.2%

HSLhsl(351.9, 79.5%, 45.9%)

HSV / HSBhsv(351.9, 88.6%, 82.4%)

CMYK0%, 88.6%, 76.7%, 17.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,768,753

CSS custom property--colour: #D21831;

Brightness & contrast

Relative luminance0.14577WCAG 2.x, 0 is black and 1 is white

Perceived brightness117.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.36:1

Contrast with white5.36:1WCAG normal text: AA

Contrast with black3.92:1WCAG normal text: Fail

Greyscale equivalent#414141

Inverted#2DE7CE

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5A5230no red cones; affects about 1% of men; ΔE 72.2 from the original

Deuteranopia#867829no green cones; the most common form, about 1% of men; ΔE 72.1 from the original

Tritanopia#E70025no blue cones; rare, and affects men and women equally; ΔE 14 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text5.36:1WCAG large text: AAA

Contrast with black, large text3.92:1WCAG large text: AA

Named colours

Crimson · ΔE 5.5 Firebrick · ΔE 12.9 Brown · ΔE 20.4 Tomato · ΔE 21.6 Dark red · ΔE 23.9 Maroon · ΔE 27.5

Nearest named CSS colourCrimson (#DC143C)ΔE 5.49, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#18D2B9

Analogous#D2188E, #D25C18

Triadic#31D218, #1831D2

Split complementary#18D25C, #188ED2

Tetradic#8ED218, #18D2B9, #5C18D2

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#F8BEC6

Lighter +30%#F2919E

Lighter +20%#ED6375

Lighter +10%#E8354D

Darker −10%#A41326

Darker −20%#760E1C

Darker −30%#490811

Darker −40%#1B0306

More saturated +25%#EA001F

Less saturated −25%#B53546

Channel breakdown

R210

G24

B49

Red210 (82.4%)

Green24 (9.4%)

Blue49 (19.2%)

Hue351.94°

Saturation (HSL)79.49%

Lightness45.88%

Dominant channelRed

Hex per channelR D2 · G 18 · B 31

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

#D21831

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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